<?php class Command { public function run(): int { return $this->execute(); } protected function execute(): int { throw new LogicException('You must override the execute() method in the concrete command class.'); } } class FooCommand extends Command { protected function execute(): int { echo "Executing FooCommand\n"; return 0; } } class BarCommand extends Command { public function __construct(private readonly FooCommand $command) { } protected function execute(): int { $this->command->execute(); echo "Executing BarCommand\n"; return 0; } } $command = new BarCommand(new FooCommand()); $command->run();
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